<template>
    <div>
    <div class="search">
      <input  v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" name=""> 
    </div>

<div class="search-content" ref="search"
  v-show="keyword"
>
<ul>
    <li  class="search-item border-bottom" v-for="item of list" :key="item.id"
      @click="handleCityClick(item.name)"
    >{{item.name}}</li>

    <li class="search-item border-bottom" v-show="hasNoData">
        没有您要的匹配数据
    </li>
</ul>
</div>
</div>
</template>
<script>
    import Bscroll from 'better-scroll'
    export default {
       name: 'CitySearch',
       props: {
             cities: Object
       },
       data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
       },
     computed: {
     hasNoData () {
        return !this.list.length
     }
     },
       watch: {
        keyword () {
           if (this.timer) {
            clearTimeout(this.timer)
           }
           if (!this.keyword) {
             this.list = []
             return 
           }

           this.timer = setTimeout(() => {
            const result = []
            for (let i in this.cities) {
                this.cities[i].forEach((value) =>{
                if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
                    result.push(value)
                }
                })
            }
            this.list = result
           }, 100)
        }
        },
        methods: {
               handleCityClick (city) {
            this.$store.commit('changeCity',city)
            this.$router.push('/')
          }
        },
          mounted () {
            this.scroll = new Bscroll(this.$refs.search)
            } 
        }
       

</script>
<style scoped>

.search {
    height: .72rem;
    background: #00bcd4;
    padding: 0 .1rem;
}

.search-input {
    height: .62rem;
    line-height: .62rem;
    width: 100%;
    text-align: center;
    border-radius: .06rem;
    color: #666;
    padding: 0 .2rem;
    box-sizing: border-box;
}

.search-content {
    z-index: 1;
    overflow: hidden;
    position: absolute;
    top:1.58rem;
    left: 0;
    right: 0;
    bottom: 0;
}

.search-item {
     line-height: .62rem;
     padding-left: .2rem;
     color: #666;
     background: #fff;
}

    
</style>